Segment Information - Revenue by Geographic Area (Detail) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2019	Mar. 31, 2018
Segment Reporting Information [Line Items]
Revenue	$ 7,879	$ 7,829
Operating Segments
Segment Reporting Information [Line Items]
Revenue	7,879	7,829
Operating Segments \| North America
Segment Reporting Information [Line Items]
Revenue	2,738	2,835
Operating Segments \| Latin America
Segment Reporting Information [Line Items]
Revenue	992	870
Operating Segments \| Europe/CIS/Africa
Segment Reporting Information [Line Items]
Revenue	1,707	1,713
Operating Segments \| Middle East & Asia
Segment Reporting Information [Line Items]
Revenue	2,338	2,300
Eliminations & other
Segment Reporting Information [Line Items]
Revenue	$ 104	$ 111

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130543-203045

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130539-203045

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130545-203045

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration